TY  - BOOK
TI  - Rock Breakage By Blasting
SN  - 9061919029
U1  - 624.152 PET 
PY  - 1994///
CY  - Rotterdam
PB  - A. A. Balkema
KW  - Rocks
KW  - Cleavage
N1  - Includes bibliographical references ( p.138 - 141 )
ER  -